Pipe-joining machine.



J. A. PITTMAN & s. A. JAMES.

PIPE JOINING MACHINE. v .'APPLIOATION FILED SEPT. 28, 1908.

Pa-tefit'ed June 15,1909.

2 BEEETQ-SHBBT 1.

J. A. PITTMAN & S. A. JAMES. PIPE JOINING MAUHINE. APPLICATION FILEDSEPT. 2B, 1908.

2 sums-sum 2.

1n: uomus PETERS 0a., WISHIIVGYON. a. c.

Patented June 15,1909.

JOHN A. PITTMAN AND SAMUEL A. JAMES, OF SPIRO, OKLAHOMA.

PIPE-JOINING MACHINE.

Specification of Letters Patent.

Patented June 15, 1909.

Application filed September 28, 1908. Serial No. 454,973.

To all whom it may concern.-

Beit known that we, JOHN A. PITTMAN and SAMUEL A. JAMES, citizens of theUnited States, residing at Spiro, in the county of Le Flore, State ofOklahoma, have invented certainnew and useful Improvements inPipe-,Joining Machines; and we do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention relates to a pipe joining machine and more particularly tothe class of machines for joining and securing the lock seam of sheetmetal stove pi es.

The primary object of the mvention is the revision of a pipe joiningmachine comprism a frame having a work support, a movab le carriageabove said work support, a manually operable lever pivotally connectedto thecarriage and having a depending pressure roller to engage the workand by means of which the longitudinal joint of a stove ipe or the likecan be accurately and speed lly formed, so as to produce a j ointofsecure character, smooth and leaving no open space in the joint forsparks to pass through and which will prevent leakage with out the useof solder or other securing means or material.

A furtherobject of the invention is the provision of a machine forjoining the longitudi- V nal seams of p1 es, particularly sheet metalstove 1pipes, iLIlC comprises a pressure roller broug t into action by aleverage bar, the

said roller operative upon the-latch joint of a may be made such as comeproperly within the scope of the claims hereunto a pended withoutdeparting from the spirit of the invention.

In the drawings: Figure 1 is a side elevation of the invention. Fig. 2is a top plan view thereof. Fig. 3 is a vertical sectional View on theline 33 of Fig. 1 with a stove pipe in position on the work support.Fig. 4 IS a front end elevation of the machine. Fig. 5 is a verticalsectional view on the line 5-5 of Fig. 1 to show the mounting of thetraveling carriage. Fig. 6 is a fragmentary ver tical sectional view.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings.

In the drawings, the machine comprises a main supporting frame includingspaced vertical uprights 7 which are joined at their lower ends tohorizontally disposed foot or base pieces 8 and connected at their upperends by cross pieces 9, the said base pieces being united by a centrallylocated longitudinal beam 10. A distance below the upper ends of theuprights 7 and secured thereto are transverse bearing blocks 11 the sameforming a mounting for a horizontally disposed work support or beam 12arranged centrally of the main frame and extending longitudinally of thesame. 12 is connected by a pivot bolt 13 to the front or forward bearingblock 1.1 to ermit the opposite end of the said bearing lock to swinglaterally to opposite sides of the main frame from its normal restingosition u on the other bearing block 11 att 1e rear of t e main frame sothat a stove pipe or the like can be positioned on the work support.

Directly above the pivoted end of the work support 12 and bolted to theu rights 7 at the front of the main frame is a orizontally disposedbrace piece or bar. lathe same serving to steady the Work support and toguide it in its lateral movement. Extending longitudinally of the mainframe are spaced horizontally disposed bars forming tracks 15 the samearranged in parallelism with each other and connected to the upper endsof the uprights7 in superposed relation with respect to the work support12.

Mounted between the tracks 15 is a mov able "carriage 16 havingjournaled thereon frictional rollers 17 the same arranged at oppositesides of said carriage and adapted to travel upon the upper faces of thesaid tracks 15. Connected to the carriage 16 below the tracks 15 aregrooved rotatable rollers 18 the same having their grooves engaging thelower edges of the tracks 15 to guide the said carriage longitudinallyupon the tracks.

Connected to the movable carriage 16 is a hand operable pressure lever19 to the inner The work support end of which and at opposite sidesthereof are fixed angle irons which latter are connected to the movablecarriage by a pivot bolt 21 so as to permit swinging movement of thepressure lever. Depending and secured to the pressure lever 19 in closeproximity to its inner pivoted end is a bracket or casting 22 in whichis rotatably mounted a pressure roller 2-3 the same being in alinementwith the longitudinal extent of the work support to engage and presstogether the lapped edges of a stove pipe when positioned upon the worksupport and thereby securely lock the lapped edges of a stove pipe toform its longitudinal seam. It is obvious the grooved rollers 18 arerotatably mounted upon fixed stud journals 18 extending from oppositesides of the depending portion 16 of the carriage.

In operation, a stove pipe is mounted upon the work support 12 byencircling the same so as to have its overlapped edges restinglongitudinally upon the said work support to be acted upon by thepressure roller in such a manner as to form an interlocking joint witheach other. The operator grips the pressure lever 19 and pressesdownwardly on the same to bring the pressure roller 23 in position ontothe seam and by pulling rearwardly on the pressure lever the carriage 16is caused to travel upon the tracks 15 during which movement the saidpressure roller 23 moves upon and compresses the lapped edges of a stovepipe to form an interlocking seam longitudinally of the same so that allliability of the said seam separating or pulling apart is obviated. Itis ob- "vious that due to the pivotal connection of the pressure lever19 with the movable carriage 16 a varying compression effect can beimparted to the pressure roller 23 when acting upon work supported bythe work support and this is accomplished by increasing thedownwardpressure upon the pressure lever or by decreasing the downwardpressure on the same.

Secured to the uprights 7 and to the center beam 10 are angle brace bars24, the latter adapted to maintain the frame more rigid at its base.

What is claimed is- 1. A machine of the class described comprising amain frame, a work support carried {by the main frame, tracks disposedabove said work support and fixed to the main frame, a movable carriagehaving frictional wheels engaging the upper and lower edges 1 of thetracks, a pressure lever pivotally connected tothe carriage androtatable pressure means carried by the lever.

2. A machine of the class described comprising a main frame, a'worksupport pivotally mounted in said main frame and adapted to movelaterally to opposite sides of the main frame, spaced tracks connectedto the main carriage movable between the said tracks, friction rollerscarried by said carriage and en gaging the upper and lower edges of thetracks, a pressure lever pivotally connected to the carriage and apressure roller carried by said lever.

3. A machine of the class'described comprising a main frame, a worksupport pivotallymounted in said main frame and adapted to movelaterallyto opposite sides of the main frame, spaced tracks connected to the mainframe and arranged above the work support, a carriage movable betweenthe said tracks, friction rollers carried by said carriage and engagingthe upper and lower edges of the tracks, leverage means havingconnection with the carriage, and a pressure roller supported by saidmeans.

prising a main frame, a laterally shiftable work support mountedhorizontally in the main frame, spaced parallel tracks carried gagingthe upper and lower edges of the tracks, a carriage movably supported bythe friction rollers, a pressure lever pivotally connected to thecarriage,.a bracket fixed to said lever in proximity to its pivotalconnection with the carriage, and a pressure roller rotatably mounted inthe bracket and adapt support. k V

In testimony whereof, we aflix our signatures, in presence of twowitnesses.

JOHN A. PITTMAN. SAMUEL A. JAMES. Witnesses:

J. R. REDWINE, W. L. BROWN.

frame and arranged above the work support, a

4. A machine of the classdescribed comby the main frame and insuperposed relation to the work support, friction rollers ened to actupon work mounted upon the work

